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Re: [ft-devel] [ftgrid] Display rendered bitmap (new feature).

From: Nikolaus Waxweiler
Subject: Re: [ft-devel] [ftgrid] Display rendered bitmap (new feature).
Date: Wed, 9 Mar 2016 23:07:21 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0

This is where you can read about text layout and interplay between
advance, lsb_delta, and rsb_delta.

Ok, so after also reading

"linearHoriAdvance: [...] Indeed, the value of metrics.horiAdvance
that is returned in the glyph slot is normally rounded to integer
pixel coordinates (i.e., being a multiple of 64) [...]"

1) advance.x (== metrics.horiAdvance) is purely important for pixel
2) Layout engines use "linearHoriAdvance" to compute layouts?
3) How are fractional advance widths realized (like DirectWrite can do them)?

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